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Finding the Fourth Proportional to 461,401.70, 692,102.55 and 212,083.70

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Solution

The fourth proportional to 461,401.70, 692,102.55 and 212,083.70 is: 318,125.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,401.70 : 692,102.55 = 212,083.70 : x
  2. Step 2: Convert to fraction form
    461,401.70/692,102.55 = 212,083.70/x
  3. Step 3: Cross multiply
    461,401.70x = 692,102.55 × 212,083.70
  4. Step 4: Simplify right side
    461,401.70x = 146,783,669,583.44
  5. Step 5: Solve for x
    x = 146,783,669,583.44/461,401.70
  6. Step 6: Final answer
    x = 318,125.55

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.